Combined gas and electric cookstove or range



April 24, 1928. 1,667,521

- F. C. ALBER- COMBINED GAS ANb ELECTRIC COOK STOVE OR RANGE Filed Nov. 26, l924 4 Sheets-Sheet 1 D W a U 5' s n 1 Q Test: C. ALBER M aw-Wm 'F. C. ALBER COMBINED GAS AND ELECTRIC COOK STOVE OR RANGE April 24, 1928. 1,667,521

Filed Nov. 26, 1924 4 Sheets-$heei 2 E- l r a uvemtoa:

T-"R ED CIALBER April 24, 1928. 1,667,521

F. c. ALBER COMBINED GAS AND ELECTRIC COOK STOVE OR RANGE Filed Nov. 26, 1924 4 Sheets$heet 5 Suva-"tom THE D C, A B

5513 Mp WW April 24, 1928.

F. C. ALBER COMBINED GAS AND ELECTRIC COOK STOVE 0R RANGE Filed Nov. 26, 1924 4 Sheets-Sheet wvcnfoz TEE. D C ALBER afkwnc1 5 Patented Apr. 24, 1928. 1,667,521 UNITED STATES PATENT OFFICE.

FRED C. ALBER, F CLEVELAND, OHIO.

COMBINED GAS AND ELECTRIC COOKS'IOVE 0R RANGE. Application filed November 26, 1924. Serial No. 752,430.

My invention relates to an improvement and electric switches are provided for the in a combined gas and electric cook stove electric burners and form a unitary part of or range, my general object being to provide the attachment, being mounted in a definite a cook stove or range in which separate sets place thereon to facilitate assembly of the 5 of electric and gas burners are particularly parts and to permit the'operator of the arranged and adapted to facilitate cooking stove to manipulate such switches with operations. safety while the gas burners are in opera- In the accompanying drawings, Fig. 1 is tion. a erspective view of a stove or range eni- Thus, the gas stove shown in the drawings,

in bodying my invention. Fig 2 is a vertical comprises a frame 2 supported on legs 3 and section of the same stove showing the carrying an oven 4 at one side of a grille or stepped arrangement of electric and gas open top 5. A number of valved gas burn burners therein. Fig. 3 is a top View of the ore 6 are supported beneath top 5 in any conelectric burner attachment separate and vential way, and top 5 lies in a horizontal 15 apart from the as stove. Fig. 4 is a verti plane at a convenient working distance cal section lengt wise of one end portion of from the floor. To this well known type of the attachment, and Fig. 5 is a vertical cross gas stove, I attach a supplemental member section thereof on line 5-5 of Fig. 3. Fig. comprising a horizontal shelf 7 having one 6 is a sectional View horizontally'of the upor more electric burners 8 mounted therein, 7 20 right member on line 66 of Fig. 5. Fig. 7 the shelf being raised to the same plane as is a perspective view of another form of the the top of oven 4 and also retired in respect invention adapted for attachment to one side to the front of the stove and the gas burners of the stove. Fig. 8 is a sectional view of 6 beneath the front part of grille A rigid the device shown in Fig. 7 as it appears atside piece or panel 8 depends from one end 2s tached to the stove. Fig. 9 is an electric of shelf 7 and provides an upright support Wiring diagram for a pair of electric heaters therefor when the shelf and this piece are as used in my attachment. bolted to the rear wall 9 of the stove and to In many communities where natural gas the flat border of top 5. To facilitate boltis available as fuel, the supply fails'or freing of the attachment to the stove shelf 7 has 83 :.o quently diminishes to a considerable extent a rear depending flange 10, and side member in extremely cold weather, thus interfering t? is formed with lateral flanges ll, includwith cooking operations where only gas is ing-a flange 12 at its top for shelf 7 which available in the range. Nearly all such comconsists of a fiat plate having circular flanged munities have a source of electric current openings 14 formed therein. Electric heat- 9 supply for illuminating purposes, but this ers, comprising channeled disks 15 are re supply is not conveniently available for elecmovably mounted within openings 14, a trio cooking ranges or stove having the gennumber of angular PIOJGCtlOIlS 16 being eral utility of a gas range, inasmuch as local welded to the bottom of the plate to sup ordinances or insurance requirements comport suchdisks. The disks may be made of pel other apparatus to be installed and spevitreous insulating material and as shown cial house wiring tobe madebefore such have spiral channels therein containing a electric ranges can be connected and used. 0011 of helical resistance wire 17. In prac- Exception is usuall made for certain electice this coil may be tapped at se eral places trio burners of pre etermined wattage, and to permit one or more sections thereof to be 5 I have therefore devised an attachment for placed in the electric circuit, using a su1ta gas stove embodying such permissibleelecable electric sw tch S for that purpose. Any trio burners, to permit cooking with either suitable electric heater or burner may be or both gas and electric burners, and have employed, and each heater controlled by a mounted the electric burners in oflset relaseparate switch, and in the present case the o tion to the gas burners to permit both gas manipulatorof the switch is not exposed to and electric cooking operations to be carthe ames rising from the gas burners in ried on simultaneously if desired. The elecstove top 5 because I mount such switches trio burners are also mounted in a way to upon the upright panel 8 at one side of the permit ready attachment thereof to a gas stove or elf-side in respect to said gas burnno 5 range of a common type, and to be easily ers. However, shelf! isexposed in some deconnected to the source of electric current, gree to the heat rising from the gas burnstove bolt 22 which passes through a spacing electric heaters is bushing 23, and also a bolt opening in bottom plate 18 to permit a nut 24 to engage the bolt, thereby fastening the several parts detachably together. The electrical conductors for the heaters are covered with asbestos insulation and these conductors extend lengthwise through the chamber 19 and connect with the electric switches which are mounted upon the vertical side panel over openings 25 therein. These openings communicate with the outer end of said chamber to permit the electrical conductors to be readily connected to the switches, see Figs. 4 and 5, and the lead-in Wires 26 for the switches pass through an insulating plug 27 which is also mounted in side panel 8' opposite chamber 19. Accordingly, the shelf and panel and the burners carried thereby provide a complete operative unit adapted to be readily attached to gas stoves of customary construction, and the electric shelf may be incorporated in a new stove when constructed or it may be made and sold as a separate article for attachment to gas stoves on the market and used either for cooking or warming purposes apart from or together with the gas burners.

I also show in Fig. 1 a side attachment for the stove, comprising a plate 30 having openings within which a second set of electric heating elements 15 are seated. These elements are constructed and secured in place in substantially the same manner as the electric heaters previously described, but the mode of attachment of the plate to the stove differs somewhat from that of shelf 7. Thus, plate 30 is provided with four legs 31. A pair of switches S for controlling these mounted on the legs at the outer side of plate 30, and the legs on mower side are adapted to be inserted 32 in the border flange 33 of the stove top 5. The lower ends of the legs are bent laterally to permit them to engage the side wall 33 of the stove when the legs are inserted through openings 32, thereby supporting plate 30 in a firm and stable horizontal position flush with the top of the stove. The attachment 30 is also thereby readily detached from the stove so that it may be carried away and used in other places. Thus, when plate 30 and heaters therein are detached it will be supported by the legs 31 in a level and elevated position above any suitable surface or base u on which they may rest.

What I claim is:

1. A cook shelf for a stove or ran e having a cooking top, containing a gas urner, said shelf being mounted upon a rear wall of said range and having electric heaters therein, and an electric switch for said heaters mounted at one end of said shelf and offside of said cooking top.

2. A cook shelf for a stove or range, having a cooking top, containing a gas burner, said shelf having a side panel mounted at the rear wall of said top, an electric heater mounted within said shelf, and a controlling switch for said heater mounted upon said side panel offside of said cooking top.

3. A cook shelf for a stove or range, having a cooking top, said shelf comprising a chambered top, portion having an electrical heater mounted therein, a downwardly extending side panel having a controlling switch for said heater mounted thereon and means for detachably securing said shelf to a range.

4. A cookin unit, comprising a horizontal top portion aving an electrical heater mounted thereon, a downwardly extending side panel having a controlling switch for said heater and means for detachably connecting said working unit to a range, havin a cooking top, said controlling switch being freely and accessible Without danger when the cooking top of said range is used for cooking purposes.

In testimony whereof I afix my signature.

FRED G. ALBER.

the opposite into slots or openings 

